30029810661 has 24 divisors (see below), whose sum is σ = 43481157720. Its totient is φ = 19971588096.

The previous prime is 30029810647. The next prime is 30029810693. The reversal of 30029810661 is 16601892003.

30029810661 is a `hidden beast` number, since 300 + 298 + 1 + 0 + 6 + 61 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 35034561 + 29994776100 = 5919^2 + 173190^2 .

It is not a de Polignac number, because 30029810661 - 2⁹ = 30029810149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30029810641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8254935 + ... + 8258571.

It is an arithmetic number, because the mean of its divisors is an integer number (1811714905).

Almost surely, 2^30029810661 is an apocalyptic number.

It is an amenable number.

30029810661 is a deficient number, since it is larger than the sum of its proper divisors (13451347059).

30029810661 is a wasteful number, since it uses less digits than its factorization.

30029810661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5605 (or 5602 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 30029810661 in words is "thirty billion, twenty-nine million, eight hundred ten thousand, six hundred sixty-one".